The minimum set of packages that must be installed are the two starting with
maxima- and maxima-exec-clisp- followed by the numbers of the version.
Since they both depend on each other, they should be installed with a single
rpm -ivh maxima-x.y.z-n.i386.rpm maxima-exec-clisp-x.y.z-n.i386.rpm
Clisp and Gnuplot should be installed in your system.
You may also want to install maxima-xmaxima-..., which provides the Xmaxima
graphical interface and a graphics program needed by some commands such as
plotdf and ploteq.
The maxima-lang-LL-... packages, where "LL" is a two-letter language code,
provide translations of the manual into various languages.